JeffTilley Any old Ping guys here? Steve?
Hey Jeff! I recollect this on ISI irons - The JZ.
Ping JZ (Regular & Stiff): Weight: R-109.8g S-115.1g; Torque: 1.9(R) 1.7 (S) ; Description: A mid weight steel shaft that plays a little softer than the Z-Z65 and ZZ-Lite. A very common shaft in Zing, Zing 2, and ISI irons. Ball Flight: Due to the mid flex point of this shaft it is designed to hit the ball between the CS-Lite and the Z-Z65.